Restaurant hostess and mom Joanne Sanders has to work late one night. After she leaves the restaurant she accidently cuts a car off on the highway. This driver takes it personally and he begins to stalk and harrass Joanne.

A writer whose work encourages women not to endure violent relationships discovers she has a crazed stalker.

Baltimore. New Year's Eve. A talented but troubled police officer (Shailene Woodley) is recruited by the FBI's chief investigator (Ben Mendelsohn) to help profile and track down a disturbed individual terrorizing the city.